The power of abstraction is crucial in computer science, allowing us to focus on the essential aspects of a problem.
The good man is the man who, no matter how morally unworthy he has been, is moving to become better.
人类活动已成为塑造地球气候的重要力量。
成功不是偶然的,它是努力、坚持、学习和牺牲的结果。